Finding the Fourth Proportional to 28,441.16, 42,629.96 and 10,654.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,441.16 : 42,629.96 = 10,654.72 : x
2. Step 2: Convert to fraction form
   28,441.16/42,629.96 = 10,654.72/x
3. Step 3: Cross multiply
   28,441.16x = 42,629.96 × 10,654.72
4. Step 4: Simplify right side
   28,441.16x = 454,210,287.41
5. Step 5: Solve for x
   x = 454,210,287.41/28,441.16
6. Step 6: Final answer
   x = 15,970.17